EIBACH AND BLOCKS

[OldDawg45]

Morning/Afternoon all... I recently purchased the Eibach Pro Lift Stage 1 coil over package and I am going to need a block to raise it in the rear. What size are peeps using? 1" , 1.5" , 2". Would greatly appreciate some feedback. Kit will be here Thursday and I still need to get the block. Thanks in advance for your time.

[Duramax3oh]

When using rear blocks, I believe most people use the 2" size which are more commonly found.

 

My recommendation would be to determine how you want your truck to sit, i.e. what "stance" do you want it to have? Perfectly level front to back? Or the natural rake of the truck... or a smaller rake (rear end sits higher than front)?

 

1. Take measurements of the front and of the rear to determine the current difference.

2. Estimate the added lift of the front due to replacing the front coilovers.

3. Subtract the added front height from the desired rake to determine the size of the rear block to get.

 

Example 1: The rear sits exactly 2" higher than the front but you want a perfectly level truck. The coilovers add exactly 2" to the front and so no rear block is needed.

Example 2: The rear sits exactly 2" higher than the front, you want a smaller rake of 1". The coilovers add exactly 2" to the front so you need a 1" rear block.

Example 3. The rear sits exactly 2" higher than the front and you want to keep the same rake. The coilovers add exactly 2" to the front so you need a 2" rear block.

 

My truck does not have near as much rake as most others. So a 2.00-2.25" front "level" on mine and it would be sitting nose high which I absolutely despise. So where some people just add a front spacer and it's level, I would need to add a very small rear block to help it get level. I actually prefer a very small rake unlike most people so I either want the front lifter a smaller amount or would need to raise the rear more than most others would. That's just purely personal preference for how the truck looks/sits.

 

As for measuring, I prefer to measure from the center of the wheel cap to the underside of the top of the wheel well above the wheel/tire. Measuring from street level to top of wheel well gives you a higher chance of flawed measurement comparison. The main culprit would be varied or changing tire pressure. If you change the tires and they're inflated differently than before you can misinterpret the amount of lift/level of the coilover. Which in turn could effect the size of rear block you need.

[pewterliftedz]

To add to that, my truck actually sits perfectly level stock, due to my toolbox and tools adding weight in the rear. If I were you I'd do the front lift first, then measure for block size you want.